The optimum temperature for oil is between 180 and 200 degrees Fahrenheit (82-93 C). Failures start to occur when oil cannot dissipate its collected heat fast enough and rises past this threshold. As it begins to break down, oil loses its lubricating, as well as its cooling, properties. While a majority of cars are not manufactured with proprietary engine oil coolers, this is a large aftermarket for them, and they are common accessories in vehicles involved in towing and other heavy-duty applications. Oil cooling kits exist for both motors and automatic transmissions. In engines, oil not only functions as a lubricant but also as the coolant for a number of parts. A motor's bottom end, which includes parts such as the crankshaft, bearings, camshaft, rods, and pistons, is cooled only by engine oil.Oil has a higher boiling point than water, so it can be used to cool items 100°C or higher, Oil is an electrical insulator, it can be used inside of or in direct contact with electrical components.

The optimum temperature for oil is between 180 and 200 degrees Fahrenheit (82-93 C). Failures start to occur when oil cannot dissipate its collected heat fast enough and rises past this threshold. As it begins to break down, oil loses its lubricating, as well as its cooling, properties. While a majority of cars are not manufactured with proprietary engine oil coolers, this is a large aftermarket for them, and they are common accessories in vehicles involved in towing and other heavy-duty applications. Oil cooling kits exist for both motors and automatic transmissions. In engines, oil not only functions as a lubricant but also as the coolant for a number of parts. A motor's bottom end, which includes parts such as the crankshaft, bearings, camshaft, rods, and pistons, is cooled only by engine oil.Oil has a higher boiling point than water, so it can be used to cool items 100°C or higher, Oil is an electrical insulator, it can be used inside of or in direct contact with electrical components.